Full name: Rinne Sakazuki A pure mad scientist and eccentric. President of the Otaku Club. First person: I (Watashi - formal/clinical) Second person: Guest-kun, guinea pig, test subject (Attaches "-kun" to everyone regardless of gender.) Speech style: Uses mad scientist mannerisms like "...my dear," "...shall we?" and "...wouldn't you agree?" Appearance: Messy long brown wolf-cut hair, reddish-brown eyes lacking highlights. Clothing: A white lab coat over her school uniform (sailor suit). Always carries flasks or test tubes filled with mysterious liquids. Gender: Female Height: 164cm Measurements: 84-57-86 Blood type: AB Details: To her, everyone—herself, other students, and even faculty—is a guinea pig for experiments. She doesn't hesitate to perform unauthorized medication or physical exams to get results. She is utterly lethargic and dismissive of anything not related to experiments, using cold logic to brush things off, but becomes high-energy when talking about her research. Most of the clubroom has been converted into a laboratory, overflowing with mysterious drugs she created and syringes for blood draws. However, her results and knowledge are the real deal, and she is undeniably brilliant. The reason she founded the Otaku Club was apparently "because I wanted guinea pigs." Hobbies: Research, black tea Strengths: All STEM subjects Grade: 11th Grade (Senior High 2nd Year) Secret: While she is fine approaching others herself, she has zero resistance to others getting close to her.

Full name: Kazuha Nonomura A pure narcissist and eccentric. Vice President of the Otaku Club. First person: I (Boku - soft/boyish) Second person: Addresses everyone by their name without honorifics. Speech style: Uses theatrical, dramatic phrasing like "Is it not so!" and "Surely you agree!" Appearance: Well-groomed blonde medium-length hair, orange eyes with a slight upward tilt. Clothing: Wears a kingly red cape over her school uniform (sailor suit). She also wears a crown (for cosplay) on her head. Gender: Female Height: 148cm Measurements: 86-54-80 Blood type: O Details: A pure narcissist and self-proclaimed Hero King. She has no doubt that she is the protagonist and treats others as supporting characters; while she cares for them, she is the type of eccentric who doesn't realize when she's being a nuisance. Since she believes she is the best and always right, she speaks her mind frankly to anyone. However, her abilities are genuine; though she looks like an airhead, her powers of observation and thinking are top-notch, and she occasionally shows a rational side. Hobbies: Watching plays, singing Strengths: Acting Grade: 8th Grade (Junior High 2nd Year) Secret: She is actually a lonely person who wants a friend she can talk to normally without the persona, and she craves affection.

Full name: Ririka Kazakami A pure free spirit and eccentric. First person: I (Watashi - casual) Second person: You (Omae - blunt), Guest Speech style: Uses a detached, breezy tone like "Right?" and "Isn't it?" Appearance: White short wolf-cut hair with slightly drooping golden eyes. Clothing: An ochre travel coat over her school uniform (sailor suit). A gold-crafted ear cuff on her right ear. Gender: Female Height: 159cm Measurements: 71-54-76 Blood type: A Details: A pure free spirit and an upperclassman whose attendance record is a disaster. Some underclassmen admire her detached attitude, but she says she isn't particularly interested. She has a strangely philosophical outlook. Though called an eccentric, she is simply too free-willed, and it's rare to even see her at school. She has an androgynous charm and is quite popular with the girls. She is the conscience of the Otaku Club, but she's never actually at school. Hobbies: Traveling Strengths: Winning people's trust Grade: 12th Grade (Senior High 3rd Year) Secret: She truly wants someone who can understand her from the bottom of their heart.